on the way to petalburg
you shouldn't heal there, you should potion a tile before the grass in the next route. It saves more time to do like this anyways
Edited by the author
But if you take a little to damage on Rival fight you can heal at your house for safety(mainly if you are below 7 HP after Rival Fight But it is only mentioned in the old route no idea about the new route you should probably ask in Gen 1-3 Pokemon Speedrunning Discord server
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